Scaffold-hanger.



D. P. GHESEBRO.

SUAPFOLD HANGER.

APPLIOATION FILED MAR 5, 1909.

Patented July 13,1909.

WIT ,5 E8:

ATTORIIE rs, L

To. all whom it may concern:

Bait known that I, DENISON P. CHssEBno,

a citizen of the United States, and a resident "ofNew York, inthecounty'of New York and State of New York, have invented oer-- tainnew anduseful Improvements in Scaffold-'lilangers, of which thefollowing is a specification.

invention relates to means for supporting and operating swingingscaffolds such as used fenbuilding'up the walls of a structure after themetallic or other framework has been completed.

Thelmain, object of my invention is to simplify the construction anddecrease the weight of devices of thisteharacter whereby they, can bemore readily handled. I

further object of my invention is to so 2 construct the apparatus thatadditional stops to. prevent aceu cntal lowering of the scaffoldplatform, other than the winding mechani'sm, will not be necessary.

. -.,My invention particularly relates to such 2 apparatus wherein thewinding mechanism issupported above the sea tl'old platform and fromwhich the said platform depends. Ileretofore in this'type ofseatloldapparm-us it has been the nactice to construct a large rectangularframework, Within which the winding drums and operating mechanism aresupported.- This construction results'ln a very heavy and unwieldyapparatus be- By practicing myinvention but sides necessitating; the useof at least two string-pieces projectingr'froin the building to supportit.

one stringpiece is required, which at its outer endtelescopes within aframe of the; supporting apparatus, the winding drums and(nu-ratingmechanism being supported below the string piece whereby anweight or strain will a come directly on the Said string-piece andSCAFFOLD-HANGER.

., 1 UNITEDVSITATESO, PATENT OFFICE.

DENI SON P. CHE SEBRO, OF NEW YORK, N. Y., ASSIGNOR TO NlEW YORKSOAFFOLDlNG COMPANY; OF NEW YORK,. N. Y., A CORPORATION OF NEW YORK.

Specification of Letters Patent. Application filed March 5, 1909. SerialNo. 581,363.

Patented .Tzily 13, 1909.

in Fig. 1. Fig. 3 is an enlarged endwiew showing the windingmechanism. iFig. 4 is an enlarged section taken on the lineXX Fig. 1 andjookin inthe direction of the arrow A. Fig. Sillustrates 'alinodification.

In thedrawings, 1 indicates the coluinns and.

A frame preferably.consisting of end pieces 4 and side bars Ssechf'dtosaid end pieces is adaptedto be slidlfbventhe 60 irders forming theframeworkfof a building in the course of construction. 1 A' projectingend of the string-piece'fl preferparts of my invention are supably so asto have the stringp ecefi encircled.

supporting frame and which might be in Y tegral with orsecni'ed to.theend pi'eces i at either end of the frame.

hearings in which a shaft 7 is journaled. The shaft 7 preferablydisposed parallel with the string-piece 2 and extends beyond the hanger(i, to which end a gear wheel 8 is. keyed.

S), 10 indicate windipg the form of sprocke The ends of the hangers, 6,6 are prov ded with suitable drumsprcferably in wheels each securely;

fastened to the shaft 7 at or nearthe hangers (i and 6. Chains 11, 12pass over the sprocket whee]s 9, l0 and. have one end of each seci-u'cdto the scaffold platform; 13 {in any desired manner, the otherendslofthe chains being preferablypeljinitted to hen free. By employingsproelietwhe chains as shown, the supporting (3, cables are permitted tot wvel; into line when raisiugrgiidlowerin A 13 in contriulistinction to'thel-iyerryl lar line taken by a cable {when-(us on-u winding drum onwhich the feebleorihain..

1s ,wound a number 'of turns toltakexii tor raising theplatformjalthough I do 'not unit h shaft 7 and has a worm gear .16

myself tothis specific form of winding drums 31' 14 indicates a bracketsecured tethe hanger 6 and carries a shaft 15 journaled ztherein.

-The shaft leis-located transverselyto'tlie said worm gear being in meshwith the gear wheel 8. A sprocket or other suitable operating wheel 17is fixed to the end, of the shaft 15 and is provided with an endlesschain or cable 18, which chain is sufiiciently long to be engaged by anoperator standing on the scaffold platform 13 when said platform is inits lowermost position.

The operation of the apparatus will be obvious. \Vhen the operatorstanding on the platform pulls the chain 18 the platform will be raisedor lowered according'to and articles or apparatus which it is supportinto be brought to bear on and susende .directly by the string-piece 2.Also y my invention additional stops or safety devices to prevent thescaffold dropping flare dispensed with, as the platform cannot moveeither up or dowiif'until the sprocket wheel 17 is rotated, as like worm16 and gear 8 form a positive lock as is well-known. v

If desir' d, the hangers might: be secured to the str ng-piece as shownin the modificationFigw-o in which the supporting part for the hangerwould not entirely encircle the strin -p1ece, butwould nevertheless besuppontec thereby and it will be-understood that where the term frame isused herein is meant that part of the device which engages thestring-piece and from which the hangers 6-depend.

\Vhat I' cla'm as my invention is:

1'. In a scaffold'hanger, the combination of a frame adapted to encirclea stringpiece, rejecting from a building, supports depen ing from saidframe, ashaft'secured to said supports and disposed" parallel with saidstring-piece, parallel Winding drums mounted on said shaft, cables orchains secured to'the scaffold platform and passing around said drumsand means whereby said I shaft may be rotated from said scaffold plat- 1form.

2. In a scaffold hanger, the combination ported by a string-pieceprojecting froma building, hangers depending from said frame, a shaftsecured to said hangers, parallel winding drums secured to said shaft,cables or'chains secured to the scaffold platform and passing aroundsaid drums, a gearwheel secured to said shaft, a worm wheel in mesh withsaid gear wheel and means whereby said worm wheel may be rotated fromsaid scaffold platform.

4.'In a scaffold hanger,the combination of a frame adapted to encircle astring-piece projecting from a building, hangers depending from saidframe, a shaft supported by said hangers, sprocket wheels secured tosaid shaft, chains secured to the scaffold and.

passing over said sprocket wheels, :1 gear wheel secured to said shaft,a worm wheel mounted on one of said hangers and in mesh with said gearwheel and a sprocket wheel and chain for actuating said worm wheel.

Signed atNew York in the county of New York and State of New York this3d day of March A. 190.9.

'DENIso P. CHESEBRO.

Witnesses: a

IRENE 'Lnrkowrrz, EDWARD M. J ELLINEK.

